Can't help with real diagnosis but this is what I found
P0722 = Output Speed Sensor Circuit No Signal
PO715 = Input/Turbine Speed Sensor Circuit Malfunction
If you already knew this, sorry.... Good Luck http://****************.com/smile/emthup.gif
from what Jetta_1.8Tip says that code descriptions are i will give my opinion.
Your trans is slipping to the point that the TCM is seeing a large RPM variation between input shaft speed and output shaft speed. this happens what the clutches slip and the trans flares. Are you having any slipping issues with that trans before it went into limp mode?
Everytime i see these two faults its because K1 clutch pack has failed and the car is either "neutralling" or banging into gear from a stop.
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